Steam-generator.



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P. M. ASHLEY:

STEAM GENERATOR.

PATENTED AUG. 25, 1903.

APPLICATION FILED DEO.13 1901.

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@XMIM/L@ aco 2 SHEETS-SHEET 1.

Suva/nto@ PATENTED AUG. 25, 1903.

F. M. ASHLEY. STEAM GENERATOR. APPLICATION FILED Dnc. 13vl 1901.

2 SHEETS-SHEET 2.

'N0 MODEL.

wiki/Leo zo UNITED STATES- y Ilhatented'ug'ust'z5, 190.

PAIENT Chitra-3E.

FRANK M. ASHLEY, oF BRooKLYN, Nw. YORK.

STEAM-c ENsRA-ron.

srncrrrcnrron formingfpm of Letters meent ivo.' 736,922', dated nagaat 25, 190s. Application and mummia 1901. serial irtfssoa. (No model.)

To all' whom it may concern.- ,j Be itknown'that I, FRANK M. AsHLESLa citizen of the United States, 'residing at vthe `city'of New York, inthe borough of Brooklyn and Stateof New York, have invented certain new and useful Improvements in Boilers, of which the following is a full, clear, and exact description.

This invention relates particularly to that class known as dash generatorsand .the

utilize as far as possiblethe heat from the burner and tosuperheat the steam to the highest degree just beiore it goes to the steam device. l .f

A further object is'to prevent any water from being carried through the `coils to the steam device and to provide means whereby its -principal parts may be easily separated zo and reunitedwithout injury. .In this type of boiler a s mall quantity is vinjected and rapidly transformed into steam, which in turn is highly superheated, so that a smallquantity of water can be converted into a large a 5 volume of steam,whereby only a small amount of water need befcarried to producea given power, especiallywhen used with portable engines, such as are used with automobiles.

lThe invention will be described with reference to Athe accompanying drawings, in which- Figure `l is a central verticai section of the generator, and Fig. 2 .is a cross-section of the same on a line taken just above the dome H.

4 3 5 Fig; 3 shows a broken vertical section offthe'. superheater and-center pipe, representing its construction when no dome is used.

, Referring to'Fig. 1, in 'which similar letters of 'reference indicate similar parts, A represents .a pump which forces Vwater into the steam-generating coil at No. 1 where it passes through the\coi1 untiiconverted int steam and is gradually Asuper-heated as it passes through the successive'coils, the ends of which are represented by thesmall numbers start-V ing with 1 and ending with 191 and passing Vthence through the steam-dome Hato the coupling D and bythe short separate pipe to within the superheater B. 'The steam then '5e passesthrough the center pipe C tothe coup' object is to provideV a construction which will ling D and thgice to the conduit E and to the steam device F afterl having passed through the boiler-v utlet-at M. It is wel known that a joint vbetween t-Wo metal parts subjected to extreme heat is liable to give out, and it will be noted that thereL are no expanded. joints in this boiler and that the super-heater B-and center pipe C are vmade integral and no'joints are subject to the direct action of the fire, and it will be also noted 6o that the heat from the burner G must passl over the coils, and the coils being of successively-increasing diameter the distances loetween thecoils act as con Tnits for the het. gases, and allthegases vmust pass /through the dome H, which is madein the form of hollow concentric rings, joined by tubular connections U, forming spaces I between them, which yserve as passages for the hot gases on their wa)7 to the stack'J. 'This' arrangementfqo f for the gases insures each coil a contact with the hot gases without-obstructing their flow sufficiently to obstruct the'draft. It will alsoj\ be noticed that the coil on the superheater B,- beginning, at 1, extends upward to the upper 75 end of the generator and then reverses its direction to the superheater and then. again` upward, thus forming a trap effect,l which traps any water that maybe carried along with the steam, and as the coils are on a 8ogradual incline the water will be separated from the steam, the water flowing along ythe bottom of the tubeforming the coil, andthe steam going to the upper side of the said tube has a free passage to pass the trapped water and continue itsway to the superheater, where it .is highly charged with heat and passes thence directly tothe dome or steam device by lway. of the center pipe f IThe superheater B and dme H are connect- 9o ed by an elbow-coupling D, which screws on the end of the center pipe C and draws them together until the shoulder W, formed on the pipe C, engages the dome and makes a secure joint, which is easily separable. The coupling DI is arranged in such a manner thattheend of the generating-coil can be joined to it by aunion-joint K, and a short piece of the tube is brazed' in the same and projects intothe superheater, thus making an annular space Lbe- :op

`tween the said tube and pipe C, which serves as a conduit between the superheater B and dome and, outlet M.

On the superheater B, which is preferably of-spherical form, are spurs N, which act as heat-conductors and also serve to support the generating-coil. Suspended from the top of the casing O are a number` of iron supports P, which are so formed that the generating parts are entirely supported by them, and between Vthe supports is a lining material of asbestos or other suitable material Q, which prevents the casing O from becoming too hot and also prevents the loss of heat from radiation. The iron supports Pare made a definite width and the sheets of asbestos or lining material are made of such a width that when the supports and lining material are placed in thecasing they Wedge against each other and are thus held in place against the casing. The lower ends of the lining/material arealso extended ,to the burner and rest thereon, which assists fin keeping them in their proper position.' It will be noted that by this arrangement there are no parts which cannot be lifted free from the casing. The only thing necessary is to remove the elbow R at the water-inlet and spring refer to the beginning of the generating-come the short end of the tube S through the casing O, remove the cover and stack J, and lift the entire coil,l su perheater, and dome free from the casing O. v

In speaking of the inlet -in the claims I as at S, and of the outlet 7 I refer to the outlet from the coupling, as at M.

Referring to Fig. 2, the dome H acts as a reservoir to supply any sudden demand for an extra supply of steam, butin many cases it is found unnecessary to use this dome, and inv that case I dispense with it and make the superheater B and center pipe C as shown in Fig. 3 and dispense with'the openings V between the pipe C and dome H, as shown in Figni:

It will be noticed that the superheater Bis of sufficient size to hold a large volume of steam,

, so it acts as a reservoir as well as a superheater, and its forlnis such that thehot gases will flow over its top in full contact with the heating-coils, and it does not actl like a ilat plate would and has not the action of 'a bafeplate, but its form allows the heat to envelop it perfectly and allows theV heat to reach 'the coils directly vabove it without unduly obstructing the flow of same. The spherical form is also much stronger and Jit is not so liable ,toA rupture from expansion and contraci .i tion. .-'It will be noticed that all the parts of' f the boiler .can expand and contract without 'i'. g

bringing any strains on the parts, as they are all free toI expand. or ycontract without damaging or .lia-bility of damaging the parts. v Having thus described my invention', what I. claim* as new, and desire to secure by Letters Patent, -isas follows: l j 1. In a steam-generator, the combination bf a burner and a superheater located directly above 'the burner with a coil of pipe also located above the burner, one end of which coil is adapted to be connected to the water-sup' superheater, an outlet and a direct passage tially as described.

2. In a steam-generator a burner, a superheater located ,directly above the burner, a coil of pipe, one end of which is adapted to receive the fluid to be heated and the other end terminating within said superheater, a dome located above said superheater and coil, an outlet and tubular direct communication from said superheater to said dome and outlet, substantiallyl as described.

3. In a steam-generator, a burner, 'a super-A heater located directly above the burner, an outlet, a dome, a pipe connecting said superheater, outlet and dome, 'a coil of pip-e one end of which is adapted to receive fluid to be heated and the other end extending through said first-named pipe and ending in said sulet, substantially as described.

4. In a steam-generator, a superheater, a coil of pipe surrounding said superheater, one end of which projects within the same, a steam-dome, a pipe extending to said dome and separably connected to same, and an outlet adapted to be connected to a steam device, substantially as described.

5. In'a steam-generator, the combination of a burner, a coil of pipes locatedgabove said burner adapted to permit of .the generation of steam therein, a superheater located directly above said burner'and connected with said coil, a dome, and a pipe extending from said superheater to said dome and separably connected thereto, substantially as described.

6. In a steam-generator, a superheater and a pipe leading directly from said superheater to the upper part of the generator, an outlet, a tube arranged in coils surrounding said pipe, one end of said tube being the inlet for iluid and the other end extending through a passage which leads to theoutlet, substantially as described. f

7. In a steamgenerator, an outlet, a super heater located directly above the source of he t and a pipe leadingdirectly from said supe eater to "the outlet, la tube arranged in coils surrounding said pipe, one end ofv said tube being the inlet for fluid and the other end extending through said pipe tothe sufperheater, substantially as described.

, 8. In a steam-generator, .a tube arranged in coils -of successively-increasing' diameters, a superheater vinto which one endV of the said tube projects, anj outlet and a `pipe communicating with said superheater and leading to the outlet, ,substantially as. described. i). Ina stea mgener'ator, the combinationjof ply and the other end terminating within said` from said superheater to Itheoutlet, substansaid pipe to the superheater, forming thereby perheater, and a passage for fiuid tosaid out- IOC) IIO

a coilof generating-pipes,'a'casinginelosing l said coil and supports for said coil removably porting said coil and a lining material sursuspended from the top o'f `said .casing andl rounding the coil-'and lield in position by the adapted to constitute the sole support foi: said coil-supports, substantially as, and for the, i 5

coil, substantially as described. purpose, described.

- 5 10. In a steam-generator, the combination Signed at New York, in the county of New of a casing, a coil of generating-pipes within York and State of New York, this 11th day said casing, a superheater anda dome, said of December, A. D. 1901. Y

Osuperhfvaater dome and coil being' supported l solely from the topof. said casing, substan- FRASI( ASHLEY' xo tally as'described. l f I Witnesses:

11. Inasteam-generator,ageneratiiigcoil, HUGH D. MEIER,

supports suspended from the casing and sup- JOSEPH F. RADERS. 

